129486743 has 4 divisors (see below), whose sum is σ = 131260608. Its totient is φ = 127712880.

The previous prime is 129486719. The next prime is 129486793. The reversal of 129486743 is 347684921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 347684921 = 269 ⋅1292509.

It is a cyclic number.

It is not a de Polignac number, because 129486743 - 2¹⁴ = 129470359 is a prime.

It is a super-2 number, since 2×129486743² = 33533633225496098, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129486694 and 129486703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129486793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886823 + ... + 886968.

It is an arithmetic number, because the mean of its divisors is an integer number (32815152).

Almost surely, 2^129486743 is an apocalyptic number.

129486743 is a deficient number, since it is larger than the sum of its proper divisors (1773865).

129486743 is an equidigital number, since it uses as much as digits as its factorization.

129486743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773864.

The product of its digits is 290304, while the sum is 44.

The square root of 129486743 is about 11379.2241826937. The cubic root of 129486743 is about 505.9121416299.

It can be divided in two parts, 12948 and 6743, that added together give a palindrome (19691).

The spelling of 129486743 in words is "one hundred twenty-nine million, four hundred eighty-six thousand, seven hundred forty-three".